bsd/sys/trace.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*-
  30  * Copyright (c) 1982, 1986, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)trace.h     8.1 (Berkeley) 6/2/93
  62  */
  63
  64 #ifndef _SYS_TRACE_H_
  65 #define _SYS_TRACE_H_
  66
  67 #include <sys/appleapiopts.h>
  68
  69 #ifdef __APPLE_API_OBSOLETE
  70 /*
  71  * File system buffer tracing points; all trace <pack(dev, size), bn>
  72  */
  73 #define TR_BREADHIT     0       /* buffer read found in cache */
  74 #define TR_BREADMISS    1       /* buffer read not in cache */
  75 #define TR_BWRITE       2       /* buffer written */
  76 #define TR_BREADHITRA   3       /* buffer read-ahead found in cache */
  77 #define TR_BREADMISSRA  4       /* buffer read-ahead not in cache */
  78 #define TR_XFODMISS     5       /* exe fod read */
  79 #define TR_XFODHIT      6       /* exe fod read */
  80 #define TR_BRELSE       7       /* brelse */
  81 #define TR_BREALLOC     8       /* expand/contract a buffer */
  82
  83 /*
  84  * Memory allocator trace points; all trace the amount of memory involved
  85  */
  86 #define TR_MALL         10      /* memory allocated */
  87
  88 /*
  89  * Paging trace points: all are <vaddr, pid>
  90  */
  91 #define TR_INTRANS      20      /* page intransit block */
  92 #define TR_EINTRANS     21      /* page intransit wait done */
  93 #define TR_FRECLAIM     22      /* reclaim from free list */
  94 #define TR_RECLAIM      23      /* reclaim from loop */
  95 #define TR_XSFREC       24      /* reclaim from free list instead of drum */
  96 #define TR_XIFREC       25      /* reclaim from free list instead of fsys */
  97 #define TR_WAITMEM      26      /* wait for memory in pagein */
  98 #define TR_EWAITMEM     27      /* end memory wait in pagein */
  99 #define TR_ZFOD         28      /* zfod page fault */
 100 #define TR_EXFOD        29      /* exec fod page fault */
 101 #define TR_VRFOD        30      /* vread fod page fault */
 102 #define TR_CACHEFOD     31      /* fod in file system cache */
 103 #define TR_SWAPIN       32      /* drum page fault */
 104 #define TR_PGINDONE     33      /* page in done */
 105 #define TR_SWAPIO       34      /* swap i/o request arrives */
 106
 107 /*
 108  * System call trace points.
 109  */
 110 #define TR_VADVISE      40      /* vadvise occurred with <arg, pid> */
 111
 112 /*
 113  * Miscellaneous
 114  */
 115 #define TR_STAMP        45      /* user said vtrace(VTR_STAMP, value); */
 116
 117 /*
 118  * This defines the size of the trace flags array.
 119  */
 120 #define TR_NFLAGS       100     /* generous */
 121
 122 #define TRCSIZ          4096
 123
 124 /*
 125  * Specifications of the vtrace() system call, which takes one argument.
 126  */
 127 #define VTRACE          64+51
 128
 129 #define VTR_DISABLE     0               /* set a trace flag to 0 */
 130 #define VTR_ENABLE      1               /* set a trace flag to 1 */
 131 #define VTR_VALUE       2               /* return value of a trace flag */
 132 #define VTR_UALARM      3               /* set alarm to go off (sig 16) */
 133                                         /* in specified number of hz */
 134 #define VTR_STAMP       4               /* user specified stamp */
 135
 136 #ifdef KERNEL
 137 #if TRACE
 138 extern struct   proc *traceproc;
 139 extern int      tracewhich, tracebuf[TRCSIZ];
 140 extern u_int    tracex;
 141 extern char     traceflags[TR_NFLAGS];
 142 #define pack(v,b)       (((v)->v_mount->mnt_vfsstat.f_fsid.val[0])<<16)|(b)
 143 #define trace(a,b,c) {                                                  \
 144         if (traceflags[a])                                              \
 145                 trace1(a,b,c);                                          \
 146 }
 147 #else
 148 #define trace(a,b,c)
 149 #endif
 150 #endif /* KERNEL */
 151
 152 #endif /* __APPLE_API_OBSOLETE */
 153
 154 #endif /* !_SYS_TRACE_H_ */
 155